/* 전력 모니터 — 밝은 블루 코퍼레이트 톤 (화이트 배경, 둥근 카드, 부드러운 그림자) */
:root {
  --blue: #0b57e3;
  --blue-600: #0b57e3;
  --blue-700: #0846bd;
  --blue-050: #eaf1ff;
  --blue-100: #d6e4ff;
  --sky: #4d8dff;
  --bg: #eef3fb;
  --surface: #ffffff;
  --ink: #1b2333;
  --ink-2: #566078;
  --ink-3: #909bb2;
  --line: #e3e9f2;
  --ok: #16a34a;
  --ok-bg: #e7f6ec;
  --warn: #d97706;
  --warn-bg: #fdf1e0;
  --danger: #e0322f;
  --danger-bg: #fdecec;
  --shadow: 0 6px 24px rgba(16, 45, 110, .07);
  --shadow-lg: 0 14px 40px rgba(16, 45, 110, .12);
  --radius: 20px;
  --radius-sm: 12px;
  font-size: 16px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: "Pretendard Variable", "Pretendard", -apple-system, BlinkMacSystemFont, "Malgun Gothic", "Apple SD Gothic Neo", "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.45;
}
.boot { display: grid; place-items: center; height: 100vh; color: var(--ink-3); }

/* ---------- 로그인 ---------- */
.login-wrap {
  min-height: 100vh; min-height: 100dvh; display: grid; place-items: center; padding: 24px;
  background: linear-gradient(160deg, #dbe8ff 0%, #eef3fb 45%, #eef3fb 100%);
}
.login-card {
  width: 100%; max-width: 400px; background: var(--surface);
  border-radius: 24px; padding: 36px 30px; box-shadow: var(--shadow-lg);
}
/* SMART POWER 로고 (브랜드 마크) */
.login-logo { display: flex; justify-content: center; margin-bottom: 8px; }
.login-logo .brand-logo { height: 64px; width: auto; }
.topbar-logo { display: flex; align-items: center; flex-shrink: 0; }
.topbar-logo .brand-logo { height: 26px; width: auto; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 42px; height: 42px; border-radius: 13px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--blue), var(--sky));
  display: grid; place-items: center; box-shadow: 0 8px 18px rgba(11,87,227,.32);
}
.brand-mark svg { width: 23px; height: 23px; }
.brand-name { font-size: 1.3rem; font-weight: 800; letter-spacing: -.02em; color: var(--ink); }
.brand-sub { color: var(--ink-3); font-size: .82rem; margin: 6px 0 28px; }

.field { margin-bottom: 15px; }
.field label { display: block; font-size: .82rem; color: var(--ink-2); margin-bottom: 7px; font-weight: 600; }
.field input {
  width: 100%; padding: 14px 15px; background: #f7f9fd; color: var(--ink);
  border: 1.5px solid var(--line); border-radius: var(--radius-sm);
  font-size: 1rem; transition: border-color .15s, box-shadow .15s, background .15s;
}
.field input::placeholder { color: var(--ink-3); }
.field input:focus {
  outline: none; background: #fff; border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(11,87,227,.12);
}
.btn {
  width: 100%; padding: 14px; border: none; border-radius: var(--radius-sm);
  background: var(--blue); color: #fff; font-size: 1.02rem; font-weight: 700;
  cursor: pointer; transition: background .15s, transform .05s, box-shadow .15s;
  box-shadow: 0 6px 16px rgba(11,87,227,.28);
}
.btn:hover { background: var(--blue-700); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .6; cursor: default; box-shadow: none; }
.login-err {
  margin-top: 15px; padding: 12px 14px; border-radius: var(--radius-sm);
  background: var(--danger-bg); border: 1px solid #f6cfce; color: #c22; font-size: .86rem; display: none;
}
.login-err.show { display: block; }

/* ---------- 앱 셸 (폰 기준: 모바일 폭으로 고정, 데스크톱에선 가운데 정렬) ---------- */
.shell {
  max-width: 440px; margin: 0 auto; min-height: 100vh; min-height: 100dvh;
  background: var(--bg); position: relative;
  display: flex; flex-direction: column;
}
/* 태블릿(480~819px): 폰 앱을 가운데 정렬 + 디바이스 테두리 */
@media (min-width: 480px) and (max-width: 819px) {
  body { background: #dde5f1; }
  .shell { box-shadow: 0 0 0 1px var(--line), 0 24px 60px rgba(16,45,110,.14); }
}
.topbar {
  position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 12px;
  padding: 12px 18px; padding-top: max(12px, env(safe-area-inset-top));
  background: rgba(255,255,255,.92); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.topbar .brand-mark { width: 34px; height: 34px; border-radius: 10px; }
.topbar .brand-mark svg { width: 19px; height: 19px; }
.topbar-title { font-weight: 800; letter-spacing: -.02em; font-size: 1.08rem; color: var(--ink); }
.topbar-title small { display: block; font-weight: 500; color: var(--ink-3); font-size: .68rem; letter-spacing: .02em; }
.topbar-spacer { flex: 1; }
.icon-btn {
  width: 40px; height: 40px; border-radius: 11px; border: 1px solid var(--line);
  background: #fff; color: var(--ink-2); cursor: pointer; display: grid; place-items: center;
  transition: border-color .15s, color .15s, background .15s;
}
.icon-btn:hover { color: var(--blue); border-color: var(--blue-100); background: var(--blue-050); }
.icon-btn svg { width: 19px; height: 19px; }
.icon-btn.spin svg { animation: spin .6s linear infinite; }

.container { padding: 18px 16px 40px; flex: 1 1 auto; min-width: 0; }

/* 히어로 배너 */
.hero {
  position: relative; overflow: hidden; border-radius: 24px;
  background: linear-gradient(120deg, var(--blue) 0%, #1e6bff 55%, #3f86ff 100%);
  color: #fff; padding: 26px 26px 24px; margin-bottom: 18px; box-shadow: var(--shadow);
}
.hero::after {
  content: ""; position: absolute; right: -40px; top: -60px; width: 240px; height: 240px;
  background: radial-gradient(circle at center, rgba(255,255,255,.18), transparent 70%);
}
.hero-bolt {
  position: absolute; right: 22px; bottom: -10px; width: 118px; height: 118px; opacity: .9;
  filter: drop-shadow(0 8px 20px rgba(0,0,0,.18));
}
.hero-eyebrow { font-size: .74rem; font-weight: 600; letter-spacing: .06em; opacity: .85; }
.hero h1 { font-size: 1.55rem; font-weight: 800; letter-spacing: -.02em; margin: 6px 0 16px; }
.hero-stats { display: flex; gap: 22px; }
.hero-stat .n { font-size: 1.9rem; font-weight: 800; line-height: 1; }
.hero-stat .l { font-size: .74rem; opacity: .85; margin-top: 4px; }
.hero-stat .n.alm { color: #ffd7d5; }

/* 요약 카드 (정상=초록 / 통신 이상=파랑 / 알람=빨강, 각 아이콘) */
.summary-card {
  display: flex; align-items: center; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 14px 4px; margin: 14px 0 6px;
}
.sum-cell { flex: 1; display: flex; align-items: center; gap: 11px; justify-content: center; padding: 2px 4px; }
.sum-ic { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; flex-shrink: 0; }
.sum-cell.ok .sum-ic { background: var(--ok-bg); color: var(--ok); }
.sum-cell.info .sum-ic { background: var(--blue-050); color: var(--blue); }
.sum-cell.alm .sum-ic { background: var(--danger-bg); color: var(--danger); }
.sum-n { font-size: 1.55rem; font-weight: 800; line-height: 1; letter-spacing: -.02em; }
.sum-cell.ok .sum-n { color: var(--ok); }
.sum-cell.info .sum-n { color: var(--blue); }
.sum-cell.alm .sum-n { color: var(--danger); }
.sum-l { font-size: .72rem; color: var(--ink-3); margin-top: 3px; white-space: nowrap; }
.sum-div { width: 1px; align-self: stretch; background: var(--line); margin: 8px 0; }

/* 섹션 헤더 */
.section-head { display: flex; align-items: center; justify-content: space-between; margin: 22px 4px 14px; }
.section-head h2 { font-size: 1.05rem; font-weight: 800; color: var(--ink); letter-spacing: -.01em; }
.updated { font-size: .74rem; color: var(--ink-3); display: inline-flex; align-items: center; gap: 6px; }
.updated::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 3px var(--ok-bg); }

/* 구역 카드 */
.zones { display: grid; grid-template-columns: 1fr; gap: 14px; }

.zone {
  position: relative; background: var(--surface); border: 1.5px solid var(--blue);
  border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow);
  transition: transform .1s, box-shadow .15s, border-color .15s; cursor: pointer;
}
.zone:hover { box-shadow: var(--shadow-lg); border-color: var(--blue-700); transform: translateY(-2px); }

.zone-top { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 18px; }
.zone-name { font-weight: 800; font-size: 1.1rem; letter-spacing: -.01em; color: var(--ink); }
.zone-sub { color: var(--ink-3); font-size: .76rem; margin-top: 6px; display: flex; gap: 14px; flex-wrap: wrap; }
.comm { display: inline-flex; align-items: center; gap: 5px; color: var(--ink-2); }
.comm svg { flex-shrink: 0; }
.comm.on svg { color: var(--ok); }
.comm.off { color: var(--danger); }
.comm.off svg { color: var(--danger); }
.badge {
  margin-left: auto; flex-shrink: 0; font-size: .74rem; font-weight: 700;
  padding: 5px 11px; border-radius: 999px; display: inline-flex; align-items: center; gap: 4px;
}
.badge svg { flex-shrink: 0; }
.badge.alm { background: var(--danger-bg); color: var(--danger); }
.badge.ok { background: var(--ok-bg); color: var(--ok); }

.power { display: flex; align-items: baseline; gap: 10px; margin-bottom: 4px; }
.power .big { font-size: 2.5rem; font-weight: 800; letter-spacing: -.03em; color: var(--blue); line-height: 1; }
.power .u { font-size: 1rem; font-weight: 700; color: var(--ink-3); }
.power-range {
  font-size: .8rem; color: var(--ink-3); margin-bottom: 18px;
  font-variant-numeric: tabular-nums; letter-spacing: .01em;
}
.power-range b { color: var(--ink-2); font-weight: 700; }

.metrics { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
.metric { background: #f7f9fd; border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px 13px; }
.metric-val { font-size: 1.05rem; font-weight: 800; color: var(--ink); letter-spacing: -.01em; }
.metric-val .unit { font-size: .72rem; font-weight: 600; color: var(--ink-3); margin-left: 2px; }
.metric-val.ok { color: var(--ok); } .metric-val.warn { color: var(--warn); } .metric-val.danger { color: var(--danger); }
.metric-label { color: var(--ink-3); font-size: .7rem; margin-top: 2px; }

/* ---------- 구역 상세 ---------- */
.detail-snap {
  position: relative; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); margin-bottom: 4px;
}
.detail-snap::before {
  content: ""; position: absolute; left: 0; top: 18px; bottom: 18px; width: 4px;
  border-radius: 0 4px 4px 0; background: var(--ok);
}
.detail-snap.status-warn::before { background: var(--warn); }
.detail-snap.status-danger::before { background: var(--danger); }
.snap-top { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 16px; }
.snap-comm { display: flex; flex-direction: column; gap: 4px; font-size: .76rem; }
.detail-snap .badge { margin-left: 0; }
.detail-snap .snap-top .badge { order: 2; margin-left: auto; }
.detail-snap .power { margin-bottom: 4px; }
.detail-snap .metrics { margin-top: 16px; }

/* 3D 시계열 산포 */
.scatter-card { padding: 14px; }
.period-tabs { display: flex; gap: 4px; margin-bottom: 12px; overflow-x: auto; scrollbar-width: none; }
.period-tabs::-webkit-scrollbar { display: none; }
.period-tabs button {
  flex: 1 0 auto; min-width: 52px; border: 1px solid var(--line); background: #fff; color: var(--ink-2);
  font-family: inherit; font-size: .8rem; font-weight: 700; padding: 8px 12px; border-radius: 10px; cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}
.period-tabs button.on { background: var(--blue); color: #fff; border-color: var(--blue); box-shadow: 0 4px 12px rgba(11,87,227,.25); }
#scatter {
  border-radius: var(--radius-sm); background:
    radial-gradient(75% 75% at 50% 42%, #ffffff 0%, #f4f7fc 65%, #eaf0f9 100%);
  border: 1px solid var(--line);
  overflow: hidden; min-height: 320px; display: block; touch-action: none;
}
.scatter-canvas { display: block; cursor: grab; }
.scatter-canvas:active { cursor: grabbing; }
#scatter .spinner, #scatter .chart-empty { color: var(--ink-3); }
.scatter-legend { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 12px; padding: 0 4px; }
.scatter-legend .lg { display: inline-flex; align-items: center; gap: 6px; font-size: .74rem; color: var(--ink-2); font-weight: 600; }
.scatter-legend .lg i { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.scatter-hint { font-size: .72rem; color: var(--ink-3); margin-top: 8px; padding: 0 4px; line-height: 1.4; }

/* 이상 항목 선택 리스트 */
.anom-head { display: flex; align-items: center; justify-content: space-between; margin: 14px 4px 10px; }
.anom-head #anom-count { display: inline-flex; align-items: center; gap: 6px; font-size: .82rem; color: var(--danger); }
.anom-head #anom-count b { color: var(--ink); font-weight: 700; }
.anom-head #anom-count svg { color: var(--danger); }
.anom-hint { font-size: .7rem; color: var(--ink-3); }
.anom-now { font-size: .78rem; color: var(--ink-3); font-weight: 600; margin-left: 4px; }
.anom-strip {
  display: flex; gap: 8px; overflow-x: auto; padding: 2px 4px 6px; scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}
.anom-chip {
  flex-shrink: 0; display: inline-flex; align-items: center; gap: 7px; cursor: pointer;
  background: #fff; border: 1.5px solid var(--line); border-radius: 999px; padding: 7px 12px;
  font-family: inherit; font-size: .8rem; color: var(--ink); font-weight: 600;
  transition: border-color .15s, background .15s, box-shadow .15s;
}
.anom-chip .anom-role {
  font-size: .66rem; font-weight: 700; color: #fff; padding: 2px 7px; border-radius: 999px; background: var(--ink-3);
}
.anom-chip.danger .anom-role { background: var(--danger); }
.anom-chip.warn .anom-role { background: var(--warn); }
.anom-chip .anom-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--danger); }
.anom-chip.warn .anom-dot { background: var(--warn); }
.anom-chip.on { border-color: var(--blue); background: var(--blue-050); box-shadow: 0 2px 8px rgba(11,87,227,.18); }
.anom-empty { font-size: .8rem; color: var(--ink-3); padding: 8px 4px; }

/* C = A - B 전력 흐름 */
.cab-card { padding: 18px; }
.cab-flow { display: flex; align-items: stretch; gap: 10px; margin-bottom: 14px; }
.cab-node { flex: 1; border-radius: var(--radius-sm); padding: 14px; border: 1px solid var(--line); position: relative; }
.cab-node.dist { background: #eef4ff; border-color: #d6e4ff; }
.cab-node.panel { background: #eafaf1; border-color: #cdeed9; }
.cab-role { font-size: .72rem; font-weight: 700; color: var(--ink-2); margin-bottom: 8px; }
.cab-node.dist .cab-role { color: var(--blue); }
.cab-node.panel .cab-role { color: var(--ok); }
.cab-val { font-size: 1.5rem; font-weight: 800; color: var(--ink); letter-spacing: -.02em; }
.cab-val span { font-size: .8rem; font-weight: 600; color: var(--ink-3); margin-left: 3px; }
.cab-sub { font-size: .72rem; color: var(--ink-3); margin-top: 4px; }
.cab-arrow { display: flex; align-items: center; color: var(--ink-3); }

/* C = A − B 애니메이션 파이프 (A 공급단 → B 부하단 전력 흐름) */
/* C = A − B 파이프 (SVG): 가로 A→B + 왼쪽에서 휘어져 내려가는 손실 파이프 */
.cab-pipe-wrap { margin: 6px 2px 12px; }
.cab-pipe-svg { width: 100%; height: auto; display: block; }
.pipe-bg-main { fill: none; stroke: #dfe8f5; stroke-width: 12; stroke-linecap: round; }
.pipe-bg-leak { fill: none; stroke: #f7ddc4; stroke-width: 10; stroke-linecap: round; transition: opacity .3s; }
.flow-dot { will-change: transform; }
.flow-dot.main { fill: #1b6fe0; filter: drop-shadow(0 0 3px rgba(27,111,224,.6)); }
.flow-dot.leak { fill: #e0632f; filter: drop-shadow(0 0 3px rgba(224,99,47,.6)); }
.pipe-dots-leak { transition: opacity .3s; }

.cab-diff { display: flex; align-items: center; justify-content: space-between; padding: 13px 15px;
  border-radius: var(--radius-sm); background: #f4f6fb; border: 1px solid var(--line); }
.cab-diff.warn { background: var(--warn-bg); border-color: #f5dca8; }
.cab-diff.ok { background: var(--ok-bg); border-color: #c3e6cf; }
.cab-diff-label { font-size: .8rem; font-weight: 600; color: var(--ink-2); }
.cab-diff-val { font-size: 1.15rem; font-weight: 800; color: var(--ink); font-variant-numeric: tabular-nums; }
.cab-diff.warn .cab-diff-val { color: var(--warn); }
.cab-diff.ok .cab-diff-val { color: var(--ok); }

/* 알람 상세 모달 */
.alarm-row { cursor: pointer; }
.alarm-chev { color: var(--ink-3); flex-shrink: 0; align-self: center; }
.hist-row { cursor: pointer; }
.modal-overlay {
  position: fixed; inset: 0; z-index: 200; display: flex; align-items: flex-end; justify-content: center;
  background: rgba(16,24,40,.45); opacity: 0; transition: opacity .25s;
  padding: 12px;
}
.modal-overlay.show { opacity: 1; }
.modal-sheet {
  width: 100%; max-width: 420px; background: var(--surface); border-radius: 22px;
  box-shadow: var(--shadow-lg); overflow: hidden;
  transform: translateY(30px); transition: transform .28s cubic-bezier(.2,.8,.2,1);
  margin-bottom: max(8px, env(safe-area-inset-bottom));
}
.modal-overlay.show .modal-sheet { transform: translateY(0); }
@media (min-width: 520px) { .modal-overlay { align-items: center; } }
.modal-head { display: flex; align-items: center; gap: 12px; padding: 18px 18px 14px; }
.modal-head.danger { background: var(--danger-bg); } .modal-head.warn { background: var(--warn-bg); }
.modal-ic { color: var(--danger); flex-shrink: 0; } .modal-head.warn .modal-ic { color: var(--warn); }
.modal-htext { flex: 1; min-width: 0; }
.modal-title { font-size: 1.1rem; font-weight: 800; color: var(--ink); }
.modal-sub { font-size: .78rem; color: var(--ink-2); margin-top: 2px; }
.modal-x { width: 32px; height: 32px; border-radius: 50%; border: none; background: rgba(255,255,255,.6);
  color: var(--ink-2); font-size: 1rem; cursor: pointer; flex-shrink: 0; }
.modal-body { padding: 16px 18px 20px; }
.modal-grid { display: flex; gap: 10px; margin-bottom: 14px; }
.mg { flex: 1; background: #f7f9fd; border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px; text-align: center; }
.mg-l { font-size: .72rem; color: var(--ink-3); margin-bottom: 4px; }
.mg-v { font-size: 1.4rem; font-weight: 800; color: var(--ink); font-variant-numeric: tabular-nums; }
.mg-v.val { color: var(--danger); }
.modal-row { display: flex; justify-content: space-between; align-items: center; padding: 9px 0; border-bottom: 1px solid var(--line); font-size: .86rem; }
.mr-l { color: var(--ink-2); }
.mr-v { font-weight: 700; color: var(--ink); font-variant-numeric: tabular-nums; }
.mr-v.active { color: var(--danger); } .mr-v.cleared { color: var(--ink-3); }
.modal-msg { margin-top: 12px; padding: 12px 14px; background: #f7f9fd; border-radius: var(--radius-sm);
  font-size: .82rem; color: var(--ink-2); line-height: 1.5; }
.modal-msg.cleared { background: #eef4ef; color: var(--ok); }

/* 실시간 알람 토스트 (상단) */
#toasts {
  position: fixed; top: 0; left: 50%; transform: translateX(-50%);
  width: 100%; max-width: 440px; z-index: 100; padding: 0 12px;
  padding-top: max(10px, env(safe-area-inset-top));
  display: flex; flex-direction: column; gap: 8px; pointer-events: none;
}
.toast {
  pointer-events: auto; cursor: pointer;
  display: flex; align-items: flex-start; gap: 11px;
  background: var(--surface); border: 1px solid var(--line);
  border-left: 4px solid var(--danger); border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg); padding: 13px 15px;
  transform: translateY(-120%); opacity: 0; transition: transform .3s cubic-bezier(.2,.8,.2,1), opacity .3s;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast.warn { border-left-color: var(--warn); }
.toast-ic { color: var(--danger); flex-shrink: 0; margin-top: 1px; }
.toast.warn .toast-ic { color: var(--warn); }
.toast-body { flex: 1; min-width: 0; }
.toast-title { font-weight: 700; font-size: .9rem; color: var(--ink); display: flex; align-items: center; gap: 8px; }
.toast-loc { font-weight: 600; font-size: .68rem; color: var(--ink-3); background: #f0f3f9; padding: 1px 7px; border-radius: 999px; }
.toast-msg { font-size: .78rem; color: var(--ink-2); margin-top: 3px; line-height: 1.4;
  overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }

/* 하단 탭바 (구역 상세) */
.tabbar {
  position: sticky; bottom: 0; z-index: 15;
  display: flex; background: rgba(255,255,255,.96); backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom);
}
.tabbar button {
  flex: 1; display: flex; flex-direction: column; align-items: center; gap: 3px;
  border: none; background: none; cursor: pointer; padding: 9px 0 8px;
  color: var(--ink-3); font-family: inherit; font-size: .72rem; font-weight: 600;
  transition: color .15s;
}
.tabbar button svg { width: 21px; height: 21px; }
.tabbar button.on { color: var(--blue); }
.tab-panel[hidden] { display: none; }

/* 알람 이력 */
#alarm-history { display: flex; flex-direction: column; }
.hist-row { padding: 12px 2px; border-bottom: 1px solid var(--line); border-left: 3px solid var(--danger); padding-left: 12px; }
.hist-row:last-child { border-bottom: none; }
.hist-row.warn { border-left-color: var(--warn); }
.hist-row.cleared { border-left-color: var(--ink-3); opacity: .82; }
.hist-top { display: flex; align-items: center; gap: 8px; margin-bottom: 3px; }
.hist-name { font-weight: 700; font-size: .88rem; color: var(--ink); }
.hist-role { font-size: .66rem; font-weight: 600; color: var(--ink-3); background: #f0f3f9; padding: 1px 7px; border-radius: 999px; }
.hist-state { margin-left: auto; font-size: .68rem; font-weight: 800; padding: 2px 8px; border-radius: 999px; }
.hist-state.active { background: var(--danger-bg); color: var(--danger); }
.hist-state.cleared { background: #eef0f4; color: var(--ink-3); }
.hist-msg { font-size: .78rem; color: var(--ink-2); line-height: 1.4; }
.hist-time { font-size: .72rem; color: var(--ink-3); font-variant-numeric: tabular-nums; margin-top: 3px; }

/* 설정 · 피지컬 목록 */
.set-list { display: flex; flex-direction: column; }
.set-row { display: flex; align-items: center; gap: 12px; padding: 13px 2px; border-bottom: 1px solid var(--line); }
.set-row:last-child { border-bottom: none; }
.set-name { font-weight: 700; font-size: .92rem; color: var(--ink); flex-shrink: 0; min-width: 88px; }
.set-detail { flex: 1; font-size: .8rem; color: var(--ink-2); }
.set-toggle { flex-shrink: 0; font-size: .7rem; font-weight: 800; padding: 3px 9px; border-radius: 999px; }
.set-toggle.on { background: var(--ok-bg); color: var(--ok); }
.set-toggle.off { background: #eef0f4; color: var(--ink-3); }
.set-foot { margin-top: 12px; font-size: .74rem; color: var(--ink-3); text-align: center; }

/* ZCT 상태 비교 */
.zct-compare { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.zct-side { flex: 1; text-align: center; background: #f7f9fd; border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px; }
.zct-role { font-size: .74rem; font-weight: 700; margin-bottom: 5px; }
.zct-val { font-size: 1.5rem; font-weight: 800; color: var(--ink); letter-spacing: -.02em; }
.zct-val span { font-size: .78rem; font-weight: 600; color: var(--ink-3); margin-left: 2px; }
.zct-mid { flex-shrink: 0; font-size: .76rem; font-weight: 700; padding: 6px 10px; border-radius: 999px; white-space: nowrap; }
.zct-mid.ok { background: var(--ok-bg); color: var(--ok); }
.zct-mid.warn { background: var(--warn-bg); color: var(--warn); }

/* 7대 전력건강도 방사형 차트 */
.radar { width: 100%; height: auto; display: block; margin-inline: auto; }
.radar-grid { fill: none; stroke: var(--line); stroke-width: 1; }
.radar-axis { stroke: var(--line); stroke-width: 1; }
.radar-data { fill: rgba(11,87,227,.14); stroke: var(--blue); stroke-width: 2; stroke-linejoin: round; }
.radar-label { font-size: 10px; font-weight: 600; fill: var(--ink-2); }

/* 배전반/분전반 세그먼트 토글 */
.seg { display: inline-flex; background: #e6ecf6; border-radius: 999px; padding: 3px; gap: 2px; }
.seg button {
  border: none; background: transparent; color: var(--ink-2); font-weight: 700; font-size: .8rem;
  padding: 6px 14px; border-radius: 999px; cursor: pointer; transition: background .15s, color .15s;
  font-family: inherit;
}
.seg button.on { background: #fff; color: var(--blue); box-shadow: 0 2px 6px rgba(16,45,110,.12); }

/* 활성 알람 목록 */
#alarm-list { margin-bottom: 4px; }
.alarm-none { color: var(--ink-3); font-size: .85rem; padding: 16px 18px; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.alarm-row { display: flex; gap: 12px; align-items: flex-start; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius-sm); box-shadow: var(--shadow);
  padding: 13px 15px; margin-bottom: 10px; border-left: 4px solid var(--danger); }
.alarm-row.warn { border-left-color: var(--warn); }
.alarm-ic { color: var(--danger); flex-shrink: 0; margin-top: 1px; }
.alarm-row.warn .alarm-ic { color: var(--warn); }
.alarm-body { flex: 1; min-width: 0; }
.alarm-name { font-weight: 700; font-size: .9rem; color: var(--ink); display: flex; align-items: center; gap: 8px; }
.alarm-role { font-weight: 600; font-size: .68rem; color: var(--ink-3); background: #f0f3f9;
  padding: 1px 7px; border-radius: 999px; }
.alarm-msg { font-size: .78rem; color: var(--ink-2); margin-top: 3px; line-height: 1.4; }
.alarm-time { font-size: .74rem; color: var(--ink-3); font-variant-numeric: tabular-nums; flex-shrink: 0; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px; margin-bottom: 14px; }
.card-head { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; }
.card-head svg { color: var(--blue); }
.card-head h3 { font-size: .98rem; font-weight: 800; color: var(--ink); letter-spacing: -.01em; }
.legend { margin-left: auto; display: flex; gap: 10px; }
.legend .lg { display: inline-flex; align-items: center; gap: 5px; font-size: .72rem; color: var(--ink-2); font-weight: 600; }
.legend .lg i { width: 10px; height: 3px; border-radius: 2px; display: inline-block; }
.chart-wrap { position: relative; }
.chart { width: 100%; height: 150px; display: block; }
.grid-line { stroke: var(--line); stroke-width: 1; vector-effect: non-scaling-stroke; }
.chart-axis { position: absolute; top: 6px; right: 2px; bottom: 2px; display: flex; flex-direction: column;
  justify-content: space-between; align-items: flex-end; pointer-events: none; }
.chart-axis span { font-size: .66rem; color: var(--ink-3); font-variant-numeric: tabular-nums;
  background: rgba(255,255,255,.7); padding: 0 3px; border-radius: 3px; }
.chart-empty { text-align: center; color: var(--ink-3); padding: 40px 0; font-size: .85rem; }

.empty, .error-box { text-align: center; color: var(--ink-2); padding: 48px 20px; grid-column: 1 / -1;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.error-box { color: var(--danger); }
.spinner {
  width: 28px; height: 28px; margin: 44px auto; border-radius: 50%;
  border: 3px solid var(--line); border-top-color: var(--blue); animation: spin .8s linear infinite; grid-column: 1 / -1;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== PC(820px+): 넓은 레이아웃 — 구역 카드 여러 열, 상세 차트 2열 =====
   (파일 맨 끝에 두어 기본 규칙보다 우선 적용되게 한다) */
@media (min-width: 820px) {
  .shell { max-width: 1160px; }
  .container { padding: 24px 30px 52px; }
  .zones { grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 18px; }
  #charts { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }
  #charts .error-box, #charts .spinner { grid-column: 1 / -1; }
  .radar { max-width: 460px; }
}